JP4341051B2 - Wiring box - Google Patents

Description

  The present invention relates to a wiring box that is installed behind a wall of a building or the like and accommodates wiring devices such as a switch and an outlet, and in particular, a through hole for allowing a front opening to face a wall surface is provided on the wall. The present invention relates to a wiring box that is placed in the through hole from the front side of the wall and is installed on the back of the wall after being drilled in the material.

  Conventionally, as this type of wiring box, for example, a technique disclosed in JP-A-2002-171633 has been disclosed. 21 to 23 show a wiring box described in Japanese Patent Laid-Open No. 2002-171633.

  21 to 23, a rectangular box-shaped wiring box 31 is attached to the wall material W through a rectangular through hole H provided in the wall material W. The wiring device 32 is accommodated. The wiring box 31 is provided with an opening 31a on the front surface, and a flange 31b that contacts the surface of the wall material W is formed on the periphery thereof. A wiring fixture mounting frame 34 is attached to the front surface of the wiring box 31 via a mounting screw 33, and the wiring fixture 32 is attached to the wiring fixture mounting frame 34 and placed at a predetermined position in the wiring box 31. It is to be accommodated. A decorative plate 35 is attached to the front surface of the wiring device mounting frame 34. In FIG. 21, the wiring fixture mounting frame 34 is shown with one wiring fixture 32 attached thereto, but up to three pieces can be attached side by side in the vertical direction.

  On the other hand, the wiring box 31 also has an opening on the bottom surface side, and the opening on the bottom surface closes the air flow to block indoor and outdoor air flow to prevent a decrease in indoor heating and cooling efficiency. An air-proof lid 36 for preventing the intrusion or the like can be attached from the back side of the wiring box 31. The airtight cover 36 is formed of a soft material, and an insertion part 36b through which the cable C is inserted is provided in the cover part 36a that closes the opening on the bottom surface of the wiring box 31.

  Further, the wiring box 31 is provided with a clamping protrusion 37 that is screwed to the mounting screw 33 and abuts against the outdoor side surface of the wall material W. The clamping protrusion 37 is screwed to the mounting screw 33. The wall material W is clamped by the flange 31b of the wiring box 31 by the advancement.

  In order to install the wiring box 31 configured in this manner on the back of the wall, first, a rectangular through hole H is provided in the wall material W, and then the cable C disposed on the back of the wall is connected to the above-mentioned through-hole. The wiring device 32 is pulled out from the hole H to the wall surface and attached to the wiring device mounting frame 34 and connected to the wall surface. After the wiring device 32 is accommodated in the wiring box 31, the wiring box 31 is connected to the wiring device 31. Push it back into the through hole H. Thereafter, the attachment screw 33 is screwed to draw the sandwiching protrusion 37 toward the wall member W, and the wall member W is sandwiched between the sandwiching protrusion 37 and the flange 31b of the wiring box 31. Can do.

In the wiring box described in Japanese Patent Laid-Open No. 2002-171633, the wall material W is sandwiched between the flange 31b of the wiring box 31 and the sandwiching protrusion 37, and therefore the wiring box 31 and the wiring to the wall material W are arranged. The instrument 32 can be attached in a short time.
JP 2002-171633 A

  However, a cable wired on this type of wall material is generally high in rigidity and poor in flexibility. For this reason, in the wiring box device using the wiring box 31 described in the above-mentioned JP-A-2002-171633, as shown in FIG. 24, the wall material W1 different from the wall material W is provided on the back of the wall. If the wall material W is erected in parallel with the wall material W, the distance between the two wall materials is short, and the back of the wall is narrow, the cable C is connected to the outer surface of the lid portion 36a of the airtight cover 36 and the other wall. Since the wall material W1 is close, when the wiring box 31 after connection with the wiring device 32 is pushed back into the through hole H, it comes into contact with the other wall material W1 and it is difficult to push further. . If forced, the cable C drawn out from the insertion portion 36b will be bent suddenly at the bent portion C1 after being pushed down until it comes into contact with another wall material W1. There is a possibility that the electric wire is torn or that the coating is damaged such as a crack.

  Further, a nail or the like is driven into the other wall material W1, but when the cable C is pressed against the other wall material W1 by forcibly pushing back the wiring box 31, There was no escape for the cable C, and the nail could penetrate and cause a leak.

  Further, in a state where the cable C is bent sharply at the bent portion C1, the cable C drawn outward from the insertion portion 36b is once bent downward, so that the airtightness formed of a soft material is used. The lead-out portion of the insertion hole 36b of the lid 36 is elastically deformed, and a gap 36c shown in FIG. 24 is formed in this portion, and the airtight state inside and outside the wiring box 31 is impaired. As a result, indoor and outdoor air flows in and out through the wiring box 31 and dust on the back of the wall flows into the room, and the air-conditioning management efficiency of the room temperature and humidity decreases.

  Further, an excessive load due to bending is applied to the lead-out portion of the insertion portion 36b, which shortens the life of the soft material.

  By the way, as shown in FIG. 25, the wiring box 31 is not the insertion part provided in the wiring box 31 or the insertion part 36b of the airtight cover 36 but the bottom wall side facing the other wall material W1 behind the wall. Is provided as an insertion hole 31c on the side wall. In the case of this wiring box 31, since the cable C can be drawn into the wiring box 31 without being bent suddenly, disconnection or breakage of the cable due to sudden bending can be prevented. Is possible.

  However, the through hole H of the wall material W is formed corresponding to the size and shape of the wiring box 31 to be inserted from the viewpoint of appearance and prevention of intrusion of dust and the like. The gap is made extremely small. For this reason, as shown in FIG. 25, the cable C is once pulled out to the wall surface and connected to the wiring device. After the wiring device is accommodated in the wiring box 31, the wiring box 31 is placed in the through hole H. When pushing back, the cable C drawn outward from the insertion hole 31c on the side wall of the wiring box 31 is formed with a curved portion C2 protruding outward between the through hole H of the wall material W. It will be. For this reason, there is a problem that it cannot be smoothly inserted into the through hole H because it is sandwiched between the peripheral edge of the through hole H and the side wall of the wiring box 31. If the cable C is forcedly pushed into the edge of the through hole H, the electric wire inside the cable C is torn or the covering is damaged.

  Therefore, in the present invention, when a wall is formed on a wall material to connect a wiring device to a cable disposed on the back of the wall and then installed on the back of the wall, the space on the back of the wall is small. Wiring without suddenly bending the cable, thus preventing disconnection and breakage of the cable, and after installing the wiring device connected to the cable at the time of installation, through holes in the wall material The first object is to provide a wiring box that can be pushed back into the interior, and even if the space behind the wall is small, the provision of a wiring box that can ensure an airtight state in the cable lead-out portion is provided. This is the second issue.

The wiring box according to claim 1 has a side wall erected on the entire periphery of the bottom wall so as to form an opening in the front surface, and the front side of the wall material in a through hole formed in the wall material of the building A box body provided on the back side of the wall material so that the opening faces the front side of the wall material, and provided with a flange that is in surface contact with the surface of the wall material on the periphery of the opening. Prepared,
An inclined surface that is inclined with respect to the axis of the opening is formed on a part of an outer surface of the side wall of the box body, and a cable wired on the back side of the wall material is guided into the box body on the inclined surface. An insertion hole is formed for
The insertion hole is formed such that an axis extending toward the outside of the box body of the insertion hole faces an oblique back side of the box body,
Further, the box body is accommodated in a state in which it does not protrude from the box body when the box body is inserted into the through hole, and from the box body when the box body is attached to the through hole. A clamping protrusion for projecting and clamping the side wall together with the flange;
In a state where the cable is drawn into the box body from the insertion hole, the cable can be bent without protruding outward from the box body, and the box body can be inserted from the through hole to the back side of the wall. Is.

  The present invention applies to the installation of a wiring device on a wall material of a building, in order to connect with a cable disposed on the back of the wall, first, a through hole is formed in the wall material, and then the wall After the cable arranged on the back is pulled out from the through hole to the wall surface and connected to the cable wiring device on the wall surface side, the wiring device is accommodated in the wiring box, and the wiring box is placed in the wall This is a so-called post-installation type wiring box that is pushed back from the material through-hole to the back side of the wall.

  The wiring box can be installed by providing a flange or the like on the front surface and attaching a mounting screw to the flange or the like. Alternatively, the wall material can be sandwiched between the flange provided on the front surface and the sandwiching protrusion that is attached to the outer wall and screwed back and forth in the opening direction. In this case, one person can easily perform the work of installing the wiring box behind the wall.

  An inclined surface that is inclined with respect to the axis of the opening is formed between the outer surface of the bottom wall and the outer surface of the side wall of the box body, and the inclination angle is generally about 45 degrees. However, the present invention is not limited to this, and an optimal value may be set in consideration of the flexibility of the cable, the wire diameter, the wall thickness related to the installation space, and the like.

  Similarly, the length, width, shape, etc. of the inclined surface may be set in consideration of the flexibility of the cable.

  An inclined surface is provided between the bottom wall and the side wall, and a cable insertion hole is formed in the inclined surface, so that, for example, the cable is arranged in a state of being hung from above on the back of the wall. When the cable is present, the cable rises obliquely upward from the insertion hole on the back of the wall. And the distance to the other wall material provided in the wall back becomes long by the part which the surface in which the insertion hole is provided inclines. Therefore, even when the other wall material is erected on the back of the wall and the wall thickness is small, that is, when the space on the back of the wall is small, the conventional insertion hole provided on the bottom wall side shown in FIG. Since the distance from the insertion hole of the wiring box to another wall material on the back of the wall is long as described above compared to the wiring box, the cable on the back of the wall has a through hole provided on the bottom wall side. Unlike a box, it is not bent sharply at the lead-out portion of the insertion hole, and the line is passed in a gently curved state.

  In addition, when the cable is arranged in a suspended state from above on the back of the wall as described above, after the cable on the back of the wall is pulled out once, a wiring device is connected on the wall surface, and the inside of the wiring box When the wiring box is pushed back into the through hole of the wall material after being accommodated in the cable, the cable is drawn out of the wiring box in a gently curved state from the insertion hole in the inclined surface of the wiring box. The In addition, the position of the insertion hole is retracted from the outer wall surface to the inner side by the amount of inclination of the surface on which the insertion hole is provided. Therefore, as shown in FIG. 25, the cable bends upward from the insertion hole between the through holes of the wall material as in the conventional wiring box in which the insertion hole of the cable is provided in the upper side wall of the wiring box. It is possible to avoid protruding in the state.

The wiring box of the present invention has an inclined surface formed on a part of the outer surface of the bottom wall of the box body.

The wiring box according to claim 1 has an inclined surface formed on a part of the outer side wall of the box body.

In the wiring box of the present invention, the insertion hole is formed on an inclined surface that constitutes a recess formed in the outer surface of the bottom wall of the box body.

In the wiring box of the present invention, the insertion hole is formed on an inclined surface that constitutes a convex portion provided on the outer surface of the bottom wall of the box body.

The wiring box according to claim 2 has a bottom wall and a side wall erected on the bottom wall so as to form an opening on the front surface. A box body inserted from the front side and disposed on the back side of the wall material so that the opening faces the front side of the wall material;
A part of the outer wall surface of the side wall of the box body is formed with an inclined surface that is inclined with respect to the axis of the opening, forming a recess formed in the outer surface of the side wall .
The inclined surface is formed with an insertion hole for guiding the cable wired on the back side of the wall material into the box body, and the insertion hole is an axis extending toward the outside of the box body of the insertion hole. Is formed so as to face the diagonally back of the box body ,
The cable guided into the recess can be guided to the back side of the box body without projecting to the outside of the box body on the outer surface of the side wall at the back side of the recess of the box body. In order to enable the cable to protrude outwardly of the box body at an appropriate position, guide grooves that open to the back and outward of the box body are provided in communication with the recesses .

  Since the side wall outer surface on the back side of the concave portion of the box body, that is, the side wall outer surface extending from the concave portion to the bottom wall, the guide groove that opens to the back side and the outer side of the box main body is provided in communication with the concave portion. The cable guided from the inside of the box body into the recess is guided to the back side of the box body along the outer surface of the side wall without protruding outward of the box body. Thus, when the wiring box is pushed back into the through hole of the wall member, the cable is prevented from being sandwiched between the through hole and the side wall of the box main body and hindering insertion. When the wiring box is pushed back into the through hole of the wall material, the cable can protrude from the guide groove to the outside of the box body at an appropriate position behind the recess. Because there is, it is drawn on the back of the wall with a gentle curve to prevent disconnection and breakage.

In the wiring box of the present invention, the insertion hole is formed on an inclined surface that constitutes a convex portion provided on the outer surface of the side wall of the box body.

In the wiring box according to a third aspect, the cable insertion hole according to the first or second aspect has an airtight structure. The airtight structure can be formed by attaching an airtight material to the insertion hole of the box body. The airtight member is in close contact with the outer surface of the cable and prevents air from flowing in and out through the gap between the cable and the insertion hole of the box body. Thereby, indoor temperature and humidity can be adjusted efficiently. Moreover, it is possible to prevent outdoor dust and the like from flowing into the room. In the present invention, the cable is restrained from being bent at the lead-out portion of the insertion hole and the load is prevented from being applied to the edge portion of the insertion hole by the action due to the formation of the inclined surface. It is possible to prevent a gap from being formed at the edge portion of the film, and to further improve the airtightness. In addition, it is possible to prevent the cable from being twisted and damaged at the edge of the insertion hole, thereby protecting the cable.

A wiring box according to a fourth aspect of the present invention is a cable box that protrudes laterally from the edge portion parallel to the inclined surface at the edge portion of the inclined surface according to any one of the first to third aspects. This is provided with a protrusion prevention wall for preventing the above-described phenomenon. The protrusion preventing wall at the edge of the inclined surface is formed between the wall projection and the clamping protrusion provided on the wiring box, with the cable protruding outward from the insertion portion protruding parallel to the inclined surface. This prevents the installation of the wiring box from being hindered. Further, the protrusion prevention wall contributes to keeping the wiring state on the back side of the wall constant by preventing the cable from swaying laterally.

  The protrusion preventing wall may be provided at both end portions of the inclined surface facing each other, or may be provided at one side edge portion. Further, it may be configured such that it protrudes like a bowl at the top of the inclined surface and covers the upper side of the inclined surface.

A wiring box according to a fifth aspect is provided with a plurality of the insertion holes according to any one of the first to fourth aspects provided on one inclined surface. Since a plurality of insertion holes are provided, a plurality of cables can be divided and wired. In addition, an optimum insertion hole can be selected in consideration of the flexibility of the cable and the like.

A wiring box according to a sixth aspect is provided with a plurality of inclined surfaces and insertion holes according to any one of the first to fifth aspects.

  In the present invention, an inclined surface is provided between the outer surface of the bottom wall and the outer surface of the side wall, a part of the outer surface of the bottom wall or a part of the outer surface of the side wall, and a cable insertion hole is provided in the inclined surface. Even when the space behind the wall is small due to another wall material standing on the back and the distance to the other wall material is short, the insertion of the wiring box in the back of the wall It is possible to avoid a state in which the cable is bent sharply at the protruding portion from the hole. As a result, it is possible to prevent the electric wire in the cable from being cut or the coating from being damaged.

  In addition, when the cable on the back of the wall is once pulled out to the surface of the wall, the wiring device is connected to the surface of the wall, accommodated in the wiring box, and then pushed back into the through hole of the wall material. Does not protrude outward from the side wall of the wiring box, so that it moves in a direction perpendicular to the wall surface into a through-hole of the same size and shape as the outer wall of the wiring box drilled in the wall material. The wiring box can be pushed in. As a result, the wiring box can be installed easily and smoothly on the back of the wall, and disconnection and breakage of the cable can be prevented.

  Furthermore, since the insertion hole has an airtight structure, air inside and outside the room flows in and out through the gap of the insertion hole, and dust and the like on the back of the wall flows into the wiring box from the insertion hole and further into the room. Is prevented. Also, it prevents the air behind the wall from flowing into the room through the insertion hole, or the indoor air from flowing out from the insertion hole into the wall, thereby preventing the temperature and humidity management efficiency from decreasing. can do.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  FIG. 1 is an exploded perspective view showing a wiring box device provided with a wiring box according to the present invention. The wiring box device is provided on a wall material W in a state where a wiring device 21 is accommodated in the wiring box 1. The wiring box 1 is installed behind the wall by being pushed into the through hole H. A wiring fixture mounting frame 23 is attached to the front side of the wiring box 1 via mounting screws 22, and the wiring fixture 21 can be attached to the wiring fixture mounting frame 23. A decorative plate 25 is attached to the front side of the wiring device mounting frame 23, that is, the indoor side by a mounting screw 24, and a decorative cover 26 is attached to the decorative plate 25. In FIG. 1, two wiring devices 21 are arranged in the vertical direction on the wiring device mounting frame 23, and correspondingly, the decorative cover 26 has two window portions 26 a in the vertical direction. Is provided.

  The wall material W is used as a partition wall of a house, and is made of a material such as wood or gypsum board. At the time of building construction of a house, etc., after a building contractor has erected a wall material W, a switch, grounding, etc. from the front side of the wall to a cable C that has been hung on the back of the wall by an electrical contractor in advance for indoor wiring. In order to connect the wiring device 21, a through hole H is formed in the wall material W. The through hole H allows the side wall 3 of the wiring box 1 to be inserted, and in order to prevent air from flowing through the gap with the side wall 3 of the wiring box 1, the side wall 3 of the wiring box 1. And an opening slightly larger than the side wall 3.

  As shown in FIGS. 1 to 6, the wiring box 1 includes a box body 1a and an airtight member 15 attached to the insertion hole 11 of the cable C in the box body 1a. As shown in FIGS. 7 and 8, the box body 1 a before the airtight member 15 is attached has an opening 2 formed on the front side, that is, the side facing the room, and has a substantially rectangular frame-like side wall 3 and bottom wall 4. The whole is formed in a substantially rectangular casing shape, and is formed in a size that can accommodate the wiring device 21 therein. At the periphery of the opening 2, a flange 5 that can come into surface contact with the surface of the wall material W is provided. 1 to 6, a boss portion 6 to which a mounting screw 22 is forcibly screwed for mounting the wiring device mounting frame 23 is provided at the center in the width direction of the upper and lower portions of the opening 2. A pair of upper and lower sides are provided along the inner wall. The wiring box 1 is vertically symmetric with respect to a horizontal line at the center in the height direction, and can be installed behind the wall regardless of which side is facing upward.

  Screw receiving grooves 7 are formed in the depth direction on one edge of the upper and lower side walls 3 of the wiring box 1, and are used for clamping the wall material W in the screw receiving grooves 7. The holding screw 8 is accommodated. A rotation restricting wall 7a is formed on the outer side of the screw receiving groove 7 along the holding screw 8. The turn restricting wall 7a is in contact with a side end portion of a holding protrusion piece 9 to be described later. The clamping protrusion 9 is prevented from rotating further. The clamping screw 8 is positioned at the corner of the opening 2 with the head 8a facing the wall surface, and can be tightened with a screwdriver from the wall surface, and the shaft portion 8b at the other end is the wiring box. 1 is supported by a support hole 4a provided at a corner of the bottom wall 4. Further, a clamping protrusion 9 formed by processing a metal plate or the like is attached to the shaft portion 8 b at the other end of the clamping screw 8, and the clamping screw 8 is attached to the end of the clamping protrusion 9. A screw hole is formed in which is screwed. Further, in the wiring box 1, a storage portion 4 b for storing the holding protrusion 9 is formed at a position near the support hole 4 a of the bottom wall 4. As will be described later, when the wiring box 1 is pushed back into the through hole H of the wall material W, the holding portion 4b protrudes outward from the side wall 3 to obstruct the insertion of the side wall 3. In order to prevent it from coming, this clamping protrusion 9 is temporarily stored.

  As the clamping screw 8 is rotated, the clamping protrusion 9 rises from the state of being stored in the storage portion 4b of the bottom wall 4, and when the clamping screw 8 is further rotated, the side end portion becomes a side wall. Further rotation is restricted by the rotation restricting wall 7 a of the screw housing groove 7, and thereafter, it is drawn toward the wall surface of the wall material W with the turning of the clamping screw 8. And when the said clamping protrusion 9 contact | abuts to the surface of the said wall material W, the wall material W will be clamped by the flange 5 which contact | abuts the surface of the wall material W on the wall surface side.

  On the other hand, between the outer surface of the upper and lower side walls 3 opposite to the screw receiving groove 7 and the outer surface of the bottom wall 4, inclined surfaces 10 having a predetermined width that are inclined from the side wall 3 to the bottom wall 4 are provided. ing. The inclination angle of the inclined surface 10 is set to about 45 degrees with respect to the axis 2a of the opening 2 of the wiring box 1 shown in FIG. However, the present invention is not limited to this, and an optimal inclination angle may be set as appropriate in consideration of the flexibility of the cable, the wire diameter, the wall thickness related to the installation space, and the like. Similarly, the length, width, shape, etc. of the inclined surface 10 may be set in consideration of the flexibility of the cable. For example, when the cable C rich in flexibility is inserted, the length of the inclined surface 10 The thickness can also be reduced. Further, in FIG. 1 to FIG. 6, two inclined surfaces 10 are provided between the side wall 3 and the bottom wall 4 positioned one above the other when installed on the wall material W. The number of the inclined surfaces 10 is not limited, and the inclination angle, the inclination length, and the like may be varied between the upper inclined surface 10 and the lower inclined surface 10. When the inclination angle, length, etc. of the inclined surface 10 are different between the upper side and the lower side, the upper inclined surface 10 and the lower inclined surface 10 are set according to the characteristics of the cable C to be inserted. Can be used properly.

  Further, an insertion hole 11 is formed at the substantially central portion of the inclined surface 10 of the box body 1a for drawing the leading end of the cable C suspended from the wall back into the wiring box 1. Yes. The insertion hole 11 may be a square hole, a round hole, or an elliptical hole, and the shape thereof is not limited. Moreover, although the said insertion hole 11 is formed in the approximate center part of the said inclined surface 10, it may exist in the edge part side of the inclined surface 10, and should just be formed in arbitrary positions.

  An airtight material 15 made of a soft material such as vinyl chloride is provided in the insertion hole 11 of the inclined surface 10 of the box body 1a. The hermetic material 15 is fitted to the peripheral edge of the insertion hole 11, and the insertion hole 16 is formed by breaking the substantially central part with a cable or cutting with a cutter or the like. In addition, the airtight material 15 in each figure shows the state after forming the insertion hole 16. The airtight member 15 is formed integrally with the box body 1a by so-called insert molding in which a soft body is injected after the box body 1a shown in FIGS. 7 and 8 is formed by injection molding and then placed in another molding die. Can be Alternatively, the box body 1a is formed by separately forming the airtight material 15 made of a soft material, forming slits all around the periphery of the airtight material 15 and fitting the slits to the periphery of the insertion hole 11. It can also be integrated. Thereby, the insertion hole 16 is formed by piercing with a cable or cutting with a cutter or the like, and the inside of the box body 1 a can be kept sealed until the cable C is inserted into the insertion hole 16.

  A protruding wall 12 that prevents the cable C protruding outward from the insertion hole 16 from protruding outward from the inclined surface 10 is provided at the side end of the inclined surface 10 near the center of the wiring box 1. It is installed. The protrusion prevention wall 12 protrudes from the side end of the inclined surface 10 toward the center of the wiring box 1 when the portion where the cable C protrudes outward from the insertion hole 16 is loosened, and a part of the protrusion prevention wall 12 is pinched. If the piece 9 enters the flange 5 side, the wiring box 1 cannot be pinched by the flange 5 and the pinching projection piece 9, and this is provided to prevent this. Further, the protrusion prevention wall 12 prevents the cable C from swaying laterally and contributes to keeping the wiring state behind the wall constant.

  As shown in FIG. 9, the protrusion preventing wall 12 may be provided on the outside side, that is, may be provided upright at both end portions of the inclined surface 10. In this case, when the portion where the cable C is drawn outward from the insertion hole 16 is loosened, it protrudes from the side end of the inclined surface 10 to the horizontal side of the wiring box 1 and protrudes in a curved shape. In this case, when the wiring box 1 is pushed into the through hole H of the wall material W, it is possible to avoid obstructing the work.

  Next, the work for installing the wiring box of the present embodiment configured as described above on the back of the wall is reduced by the fact that another wall material W1 or the like is erected on the back of the wall. Will be described with reference to FIGS. 10 to 13.

  In order to install the wiring box on the back of the wall, though not shown, a through hole H is provided in advance in the installation location of the wiring box 1 in the wall material W. Separately, the wiring device 21 is attached to the wiring device mounting frame 23. However, the wiring device 21 may be connected to the wiring device mounting frame 23 after being connected to the cable C. Next, the cable C suspended from above on the back of the wall is inserted from the through hole H into the insertion hole 16 of the wiring box 1 and pulled out to the wall surface. As shown in FIG. The wiring device 21 is connected to. Next, the mounting screw 22 shown in FIG. 1 is inserted into the mounting hole provided in the wiring device mounting frame 23 and screwed into the boss 6 of the wiring box 1 shown in FIG. Is attached to the front surface of the wiring box 1 and the wiring device 21 is accommodated in the wiring box 1.

  When the wiring device 21 is accommodated in the wiring box 1, the wiring box 1 is pushed into the through hole H of the wall material W as shown in FIG. 11. At this time, the cable C is provided with the inclined surface 10 in the wiring box 1 and is inserted into the wiring box 1 through the insertion hole 16 formed in the inclined surface 10. Even when the distance to the other wall material W1 is short and the back of the wall is narrow, it is not bent suddenly and is wired with a gentle curved line.

  Next, when the wiring box 1 is completely inserted into the through hole H, the clamping screw 8 is turned using a tool such as a screwdriver from the wall surface. Then, the clamping protrusion 9 in the storage portion 4b of the wiring box 1 stands up, and the rotation restricting wall 7a is formed on one side of the screw receiving groove 7, so that further rotation is prevented. It moves to the wall surface side along the screw 8. Then, the wall material W is held together with the flange 5 of the wiring box 1 as shown in FIG. Thereby, the wiring box 1 is installed on the wall material W.

  Thus, when the wiring box 1 is installed on the wall material W, as shown in FIG. 13, the decorative plate 25 is attached to the front surface of the wiring fixture mounting frame 23 via the mounting screws 24 shown in FIG. Then, the decorative cover 26 is attached.

  Thus, the installation work of the wiring box is completed.

  Next, the bending state of the cable C when the wiring box 1 is pushed into the through hole H of the wall material W will be described.

  Since the wiring box 1 is provided with the inclined surface 10 between the side wall 3 and the bottom wall 4, the insertion hole 16 is wired from the upper side wall 3 by the vertical length of the inclined surface 10. Retreats to the inside of the box 1 for use. Further, the formation of the inclined surface 10 causes the cable C to be drawn from the insertion hole 16 of the upper side wall 3 not upwardly but obliquely upward. Therefore, the cable C is located below the upper edge of the through hole H at the position of the bottom wall 4. Therefore, when the wiring box 1 is pushed back into the through hole H, a curved portion C2 generated in the conventional wiring box shown in FIG. 25 is generated at a portion drawn outward from the insertion hole 16. Since the cable C is not sandwiched between the upper edge of the through hole H and the outer surface of the side wall 3 of the wiring box 1, the wiring box 1 can be smoothly inserted into the through hole H. Can be pushed in.

  Then, after the wiring device 21 is accommodated in the wiring box 1, when the wiring box 1 is pushed into the through hole H of the wall material W, the position of the insertion hole 16 is similarly on the inclined surface 10. The distance from the bottom wall 4 surface to the inner side of the wiring box 1 by the length in the horizontal direction increases the distance from the insertion hole 16 to another wall member W1 on the back of the wall accordingly. Further, the formation of the inclined surface 10 causes the cable C to be drawn obliquely upward from the insertion hole 16. Accordingly, the cable C is not bent sharply at an acute angle in the portion drawn from the insertion hole 16 of the wiring box 1 in a state where the wiring box 1 is inserted into the through hole H. In the back of the wall, it is wired in a gently curved state. As a result, it is possible to prevent the cable C from being disconnected or cracked from being generated by bending at a steep angle.

  Next, the operation of the airtight member 15 fitted in the insertion hole 11 will be described.

  The airtight material 15 is pierced with the cable C or cut with a cutter or the like to form an insertion hole 16. When the cable C is inserted into the insertion hole 16, the cable C Close to the outer surface. As a result, indoor and outdoor air flows in and out from this portion, and dust and the like on the back of the wall are prevented from flowing into the wiring box 1 and further into the room. Further, the efficiency of the temperature and humidity management in the room is prevented from being lowered by the air behind the wall flowing into the room or the air flowing out into the wall behind.

  By the way, in the said embodiment, although the one insertion hole 16 is formed with respect to one inclined surface 10, as shown in FIG. 14, the two insertion holes 11 with respect to one inclined surface 10 are formed. Or three or more insertion holes 16 may be formed. In this case, the cable C can be pulled out from the insertion hole 16 at a more optimal position. Note that the insertion holes 16 may have different sizes and shapes, and the inclination angles of the inclined surfaces 10 in the insertion holes 16 may be different from each other.

  Next, another modification of the above embodiment is shown in FIG.

  In FIG. 15, the inclined surface 10 of the wiring box 1 is integrally formed with a flange 13 extending in the horizontal direction from the upper side wall 3 toward the bottom wall 4 with a length L. In the case of this wiring box 1, the cable C protruding from the insertion hole 16 is restricted by the flange 13, so that when the wiring box 1 is pushed into the through hole H, the cable C is above the surface of the upper side wall 3. Therefore, the wiring box 1 can be smoothly inserted into the through hole H. However, if the extension length L of the rod 13 is too large, the extension length L is set so as not to prevent the cable C drawn from the insertion hole 16 from being obliquely upward to obtain a gentle curved state. .

  Next, still another modification of the above embodiment is shown in FIG.

  In FIG. 16, a guide tube 14 having an internal space having substantially the same diameter and the same shape as the cable C is attached to the insertion hole 16 of the inclined surface 10 of the wiring box 1. The guide tube 14 has a predetermined length in a direction orthogonal to the inclined surface 10. In the case of this wiring box 1, the cable C drawn from the insertion hole 16 is guided in a certain direction along the guide tube 14, so that after the cable C is drawn from the insertion hole 16, By swinging in the horizontal direction and bending in the horizontal direction, it is possible to prevent the distance between the wall back and the other wall material W1 from being reduced, and to prevent disconnection and breakage. Conversely, the lead-out portion from the insertion hole 16 is bent upward and is prevented from curving and protruding upward from the outer surface of the upper side wall 3, and the wiring box 1 is inserted into the through-hole H. It can be inserted smoothly. Furthermore, it is possible to prevent the cable C from being bent suddenly at the lead-out portion of the insertion hole 16 to prevent the cable C from being disconnected or damaged.

  Although the cable C can be elastically held and guided in a certain direction by only the airtight material 15, the effect can be further enhanced by providing the guide tube 14, and the airtightness can be improved. The sex can also be enhanced.

  Next, a wiring box according to another embodiment of the present application will be described with reference to FIGS.

  First, in FIG. 17, a concave portion 17 is formed on the upper portion of the bottom wall 4 of the wiring box 1, which protrudes toward the inner side of the wiring box 1 and has a bent surface that is bent in a substantially square shape. The inclined surface 10 is formed in the recess 17. The inclined surface 10 is provided with an insertion hole 16 through which the cable C is inserted.

  Although the internal storage space of the wiring box 1 shown in FIG. 17 is slightly narrowed, the connection state with the wiring device 21 accommodated therein is better when the insertion hole 16 is positioned in the upper portion of the bottom wall 4. It is beneficial in the case where it is good, and the cable C projects obliquely upward from the insertion hole 16 as in the case where the inclined surface 10 is provided between the side wall 3 and the bottom wall 4 described above. In addition, it is possible to prevent the cable C from being bent at a steep angle and causing breakage or breakage. In the case of the wiring box 1 shown in FIG. 17, in particular, since the inclined surface 10 is provided in the upper part of the bottom wall 4, the inclined surface inclined between the upper side wall 3 and the bottom wall 4 described above. Since the insertion hole 16 is positioned lower than 10, when the wiring box 1 is pushed into the through hole H of the wall material W, the cable C interferes with the peripheral portion of the through hole H and is inserted. Can be prevented more reliably.

  Note that any number of the inclined surfaces 10 can be provided at arbitrary positions such as a substantially central portion of the bottom wall 4 in the height direction.

  Next, in FIG. 18, the convex part 18 which protrudes toward the outer side in the upper part of the bottom wall 4, and has the bending surface bent in the substantially square shape can also be provided.

  In the case of the wiring box 1 shown in FIG. 16, the horizontal distance from another wall material W1 on the back of the wall is shortened by the amount of protrusion of the bent surface, but the cable C protruding from the insertion hole 16 stands diagonally upward. If the length of the cable C that has been shortened can be absorbed and the cable C can be prevented from being bent at a steep angle, an effect of securing a wider accommodation space in the wiring box 1 can be obtained. In the wiring box 1 shown in FIG. 18 as well, an arbitrary number of substantially rectangular bent surfaces can be provided at arbitrary positions on the bottom wall 4.

  Next, in FIG. 19 and FIG. 20, a recess 17 that protrudes to the inside of the wiring box 1 is formed in a part of the upper side wall 3, and the wiring box 1 is formed on the inclined surface 10 of the recess 17. An insertion hole 16 through which the cable C can be pulled out is provided. Further, a guide groove 19 communicating with the concave portion 17 is formed in the outer surface of the side wall 3 on the back side of the concave portion 17, and the guide groove 19 is formed in the wiring box at the rear opening portion 19a and the outer side opening portion 19b. 1 is open to the back and the outside.

  In the wiring box 1 shown in FIGS. 19 and 20, the cable C drawn into the recess 17 is guided along the guide groove 19 in the direction indicated by the solid line in FIG. 19, and the cable C is used for the wiring. The wiring box 1 is prevented from protruding between the side wall 3 of the wiring box 1 and the through hole H of the wall material W by projecting upward and laterally on the outer side of the box 1. Can be pushed back smoothly.

  Further, since the cable C can be protruded outward at an appropriate position of the guide groove 19, after the wiring box 1 is pushed into the through hole H of the wall material W, the cable C is guided. By projecting in the direction indicated by the two-dot chain line in FIG. 19 at the appropriate position of the groove 19 on the back side of the wall, the cable C can be wired in a gentle curve.

  Next, although not shown, a convex portion similar to the convex portion 18 shown in FIG. 18 may be formed on the outer surface of the upper side wall 3, and an insertion hole may be provided on the inclined surface of the convex portion. In this case, the cable C protrudes upward from the outer surface of the side wall 3 as in the conventional example shown in FIG. However, since the insertion hole provided in the inclined surface is drawn toward the diagonally backward direction, it is not drawn out in the upward direction as in the conventional example and does not protrude greatly outward, and the cable C in FIG. The amount of protrusion of the curved portion C2 can be kept small. Therefore, it is possible to insert the wiring box 1 into the through hole H by pushing it while changing the posture of the wiring box 1.

  By the way, in each said embodiment, although what has attached the airtight material 15 to the penetration hole 11 of the box main body 1a is shown, when implementing this invention, it is good also as what does not attach the said airtight material 15. In this case as well, the same effect can be obtained in the wiring state of the cable C on the back of the wall, the pushing of the wiring box 1 into the through hole H, and the like. In this case, in order to protect the cable C, it is advisable to chamfer the corners of the insertion hole 11 that come into contact with the cable C.

It is a disassembled perspective view which shows the box apparatus for wiring provided with the box for wiring of embodiment of this invention. It is the perspective view which looked at the box for wiring of FIG. 1 from the diagonal front side. It is the perspective view which looked at the box for wiring of FIG. 1 from the diagonal back side. It is a front view of the box for wiring of FIG. It is a rear view of the wiring box of FIG. It is a longitudinal cross-sectional view of the box for wiring of FIG. It is the perspective view which looked at the box main body of FIG. 1 from the diagonal front side. It is the perspective view which looked at the box main body of FIG. 1 from the diagonal back side. It is a perspective view which shows the modification of the box for wiring of FIG. It is sectional drawing which shows the operation | work which installs the box for wiring of FIG. 1 in a wall back. Similarly, it is sectional drawing which shows the operation | work which installs the wiring box of FIG. 1 in a wall back. Similarly, it is sectional drawing which shows the operation | work which installs the wiring box of FIG. 1 in a wall back. Similarly, it is sectional drawing which shows the operation | work which installs the wiring box of FIG. 1 in a wall back. It is a principal part perspective view which shows another modification of the box for wiring of FIG. It is a perspective view which shows another modification of the box for wiring of FIG. It is sectional drawing which shows another modification of the box for wiring of FIG. It is sectional drawing which shows the box for wiring of other embodiment of this invention. It is sectional drawing which shows another box for wiring in other embodiment of this invention. It is sectional drawing which shows another wiring box in other embodiment of this invention. It is a principal part perspective view of FIG. It is a disassembled perspective view which shows the box apparatus for wiring provided with the conventional box for wiring. It is sectional drawing which shows the state before installing the box for wiring of FIG. 21 in a wall material. It is sectional drawing which shows the state after installing the box for wiring of FIG. 21 in a wall material. It is a side view which shows the state of a cable when the box for wiring of FIG. 21 is installed in the back of a narrow wall. It is a side view which shows the state which pushes back another conventional wiring box in the through-hole of wall material.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wiring box 1a Box main body 2 Opening 2a Axis 3 Side wall 4 Bottom wall 5 Flange 9 Clamping protrusion 10 Inclined surface 11, 16 Insertion hole 12 Protrusion prevention wall 15 Airtight material 17 Recess 18 Protrusion 19 Guide groove 19a Back opening 19b Outside opening 21 Wiring device C Cable H Through hole W Wall material

Claims (6)

A bottom wall and a side wall erected on the entire periphery of the bottom wall to form an opening on the front surface; inserted into a through hole formed in the wall material of the building from the front side of the wall material; A box body provided on the back side of the wall material so that the opening faces the front side of the wall material, and provided with a flange body in contact with the surface of the wall material on the periphery of the opening ;
An inclined surface inclined with respect to the axis of the opening is formed on a part of the outer surface of the side wall of the box body,
The inclined surface is formed with an insertion hole for guiding the cable wired on the back side of the wall material into the box body,
The insertion hole is formed such that an axis extending toward the outside of the box body of the insertion hole faces an oblique back side of the box body,
Further, the box body is accommodated in a state in which it does not protrude from the box body when the box body is inserted into the through hole, and from the box body when the box body is attached to the through hole. A clamping protrusion for projecting and clamping the side wall together with the flange;
In a state where the cable is drawn into the box body from the insertion hole, the cable can be bent without protruding outward from the box body, and the box body can be inserted from the through hole to the back side of the wall. A wiring box characterized by that. A bottom wall and a side wall erected on the bottom wall so as to form an opening on the front surface; and inserted into a through hole formed in the wall material of the building from the front side of the wall material, the opening being A box body disposed on the back side of the wall material so as to face the front side of the wall material,
A part of the outer wall surface of the side wall of the box body is formed with an inclined surface that is inclined with respect to the axis of the opening, forming a recess formed in the outer surface of the side wall.
The inclined surface is formed with an insertion hole for guiding the cable wired on the back side of the wall material into the box body,
The insertion hole is formed such that an axis extending toward the outside of the box body of the insertion hole faces an obliquely back side of the box body,
The cable guided into the recess can be guided to the back side of the box body without projecting to the outside of the box body on the outer surface of the side wall at the back side of the recess of the box body. In order to enable the cable to protrude outwardly of the box body at an appropriate position on one side, an opening that opens to the back and the outside of the box body is formed in communication with the recess. Wiring box to be used.   The wiring box according to claim 1, wherein the insertion hole has an airtight structure.   The protruding surface of the inclined surface is provided with an anti-extrusion wall for preventing a cable from protruding laterally from the edge portion in parallel to the inclined surface. 4. The wiring box according to any one of 3 above.   The wiring box according to any one of claims 1 to 4, wherein a plurality of the insertion holes are provided on one inclined surface.   The wiring box according to claim 1, wherein a plurality of the inclined surfaces and the insertion holes are provided.

Images